Doughnut
Background
While most connection puzzles rely on staying within the grid, this allows solutions that wraparound the top or sides.
Puzzle and Goal
An unsolved puzzle consists of a rectangular grid containing some numbers.
The goal is to draw a single line connecting the numbers, according to the rules.
Rules
The solved grid must satisfy the following conditions:
Connect the numbers in order.
Each cell is used exactly once in the path.
The path may leave the grid at the side, returning on the other side of the same row, or on the top/bottom, likewise returning on the opposite end of the column.
Playable Online